V5 与旧版 V3

function estimateBuy(bytes32 poolId, uint256 ethIn, address buyer)
    view
    returns (uint256 tokensOut, uint256 platformFee, uint256 inviterFee);

function estimateSell(bytes32 poolId, uint256 tokenAmount, address seller)
    view
    returns (uint256 ethOut, uint256 platformFee, uint256 inviterFee);

function estimateBuy(bytes32 poolId, uint256 ethIn)
    view
    returns (uint256 tokensOut, uint256 platformFee, uint256 floorBoostFee);

function estimateSell(bytes32 poolId, uint256 tokenAmount)
    view
    returns (uint256 ethOut, uint256 platformFee, uint256 floorBoostFee);